Investigation on Biomechanical Behavior of Cardiovascular stents

Cardiovascular disease is one of the main reasons for mortality around the world. The majority of deaths from cardiovascular diseases are due to coronary artery diseases. The main cause of such problems is the restriction of blood flow due to the build-up of plaque. There are some methods to treat such type of problems. A traditional cure is implanting a stent.The Stentening is one of the most important methods to treat atherosclerosis. The Coronary stents are small metallic tubes in the heart arteries to prevent the arteries from closing up. Over 40 different types of stents are commercially available or in development and they are made up of stainless steel, Co-Cr alloy, platinum, tantalum, ect.,In this work, the mechanical property also has to be taken into account. The Coronary stent geometries were constructed using CATIA modeling software. The model was imported into ANSYS for stress analysis. The results are drawn for two types of stents with different material properties of biocompatibility materials. The results are validated for type 2 with Co-Cr alloy.